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该机通电后待机指示灯亮,但整机不工作。反复按动电源开关偶尔可以开机,但原来储存的节目全部消失;原来的中文屏显变成英文屏显;音量最大,亮度、色度及对比度最小。必须重新搜索选台并且重新调整各模拟量后才能正常收看。此时如果关机后再开机则必须重复上述过程。分析与检修:从上述故障现象看,均与电脑控制部分有关,断定是 CPU 及外围电路有问题。首先检查电脑块 D701(cH04001—5C25)的必备工作条件,即(40)脚
The machine lights standby power indicator, but the machine does not work. Repeatedly press the power switch occasionally can boot, but all the original stored programs disappear; the original Chinese screen becomes English screen display; maximum volume, brightness, color and contrast minimum. Must re-search channel selection and readjustment of the analog before normal viewing. At this point if you turn off and then turn on the machine, you must repeat the above process. Analysis and overhaul: From the above symptoms, are related to the computer control section, concluded that there is a problem with the CPU and peripheral circuits. First check the computer block D701 (cH04001-5C25) the necessary working conditions, namely (40) feet